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stm32samples/F0-nolib/usbcan_relay/Readme.md
Edward Emelianov 4fc13b2b11 nwxt appr. to canusbrelay
2021-07-23 23:37:52 +03:00

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CAN/USB management of 2 relays and some other things

The device can also work as USB-CAN converter.

CAN protocol is quite simple. The node receives data to selected CAN ID, transmission done with the ID = CANID + 0x100.

Pinout:

  • PA0/1 - Relay0/1
  • PA2..5 - Button0..3 (user buttons)
  • PA6/7 - ADC inputs through resistive divider (0..5 and 0..12V)
  • PA8..10 - PWM0..2 outputs (opendrain through SI2300, 5 or 12V)
  • PA13/14 - SWD; the SWD pin +3.3V connected through 22Ohm resistor
  • PA11. PA12 - USB DM/DP
  • PB0..PB7 - CAN ID
  • PB8, PB9 - CAN Rx/Tx
  • PB12..15 - LED0..3 outputs (direct outputs without any protection!!!)

The pins LEDr0 and LEDr1 are indicated relay works (12V through 2.2kOhm resistor)